A virtual lab system is the simulation of real devices and experiments usingcomputer and network technology. It can make users do experiments easily, observe experimentphenomena and results through the remote terminal...A virtual lab system is the simulation of real devices and experiments usingcomputer and network technology. It can make users do experiments easily, observe experimentphenomena and results through the remote terminal. Consequently, users can get final results toverify relative theory. The article analyses the features of virtual lab systems. A real virtual labsystem named 'Multimedia Virtual Lab for Digital Circuit Logic Design (MVLDCLD)' which has beendeveloped by the authors and their group is also presented.展开更多
The Constant Modulus Algorithm (CMA) enjoys widespread popularity as methodsfor blind beamform-ing and equalization of communication signals, CMA is straightforward toimplement, robust, and computationally of moderate...The Constant Modulus Algorithm (CMA) enjoys widespread popularity as methodsfor blind beamform-ing and equalization of communication signals, CMA is straightforward toimplement, robust, and computationally of moderate complexity. Furthermore, it is insensitive toarray imperfection. In an environment containing multiple constant modulus signals, the signalextracted by CMA depends on the relative power of the incident signals. According previous works,the CMA is prone to capture the strongest Constant Modulus (CM) signal at the output of the array.In this paper, we show that the weak CM signal could be recovered by CMA_(1-2) and CMA_(2-1) whensetting special step-size. Simulation examples confirm our remarks.展开更多
In the process of ultrafiltration, the occurrence of the limiting flux iselucidated with the formation of a cake(gel) layer on the membrane surface. Before cake formation,the pressure drop on the concentration polariz...In the process of ultrafiltration, the occurrence of the limiting flux iselucidated with the formation of a cake(gel) layer on the membrane surface. Before cake formation,the pressure drop on the concentration polarization layer, as well as the permeate flux, increaseswith the applied pressure. The pressure drop on the concentration polarization layer, however, willno longer change with the applied pressure after the formation of the cake layer. The limiting fluxwill be obtained if the hydrodynamic conditions in the filtration channel are not affected by thecake layer. A mathematics model for predicting the limiting flux for the charged solute inultrafiltration is developed. In this model, a repulsive electric force is taken into account inaddition to convection and diffusion when the solute is carrying the same charge as the membranematerial. A procedure to correlate the model with experimental ultrafiltration data is also present.The results show that a model in this paper is developed on a more realistic perception of theultrafiltration system and the predicting data agrees well with experimental data.展开更多
文摘The European Union Chamber of Commerce Business Confidence Survey 2010 was released by the European Union Chamber of Commerce in China in partnership
文摘A virtual lab system is the simulation of real devices and experiments usingcomputer and network technology. It can make users do experiments easily, observe experimentphenomena and results through the remote terminal. Consequently, users can get final results toverify relative theory. The article analyses the features of virtual lab systems. A real virtual labsystem named 'Multimedia Virtual Lab for Digital Circuit Logic Design (MVLDCLD)' which has beendeveloped by the authors and their group is also presented.
文摘The Constant Modulus Algorithm (CMA) enjoys widespread popularity as methodsfor blind beamform-ing and equalization of communication signals, CMA is straightforward toimplement, robust, and computationally of moderate complexity. Furthermore, it is insensitive toarray imperfection. In an environment containing multiple constant modulus signals, the signalextracted by CMA depends on the relative power of the incident signals. According previous works,the CMA is prone to capture the strongest Constant Modulus (CM) signal at the output of the array.In this paper, we show that the weak CM signal could be recovered by CMA_(1-2) and CMA_(2-1) whensetting special step-size. Simulation examples confirm our remarks.
文摘In the process of ultrafiltration, the occurrence of the limiting flux iselucidated with the formation of a cake(gel) layer on the membrane surface. Before cake formation,the pressure drop on the concentration polarization layer, as well as the permeate flux, increaseswith the applied pressure. The pressure drop on the concentration polarization layer, however, willno longer change with the applied pressure after the formation of the cake layer. The limiting fluxwill be obtained if the hydrodynamic conditions in the filtration channel are not affected by thecake layer. A mathematics model for predicting the limiting flux for the charged solute inultrafiltration is developed. In this model, a repulsive electric force is taken into account inaddition to convection and diffusion when the solute is carrying the same charge as the membranematerial. A procedure to correlate the model with experimental ultrafiltration data is also present.The results show that a model in this paper is developed on a more realistic perception of theultrafiltration system and the predicting data agrees well with experimental data.
